‘Lock-and-Key’ geometry effect of patterned surfaces: the wettability and the switching of adhesive force
- ‘Lock-and-Key’ geometry effect of patterned surfaces: the wettability and the switching of adhesive force
- 임매순; Xing-Jiu Huang; 김동한; 이주형; 윤준보; 최양규
- Issue Date
- VOL 5, NO 1-94
- A new type of “lock‐ and‐ key” patterned surface consisting of dense arrays of microfabricated PDMS lens and bowl arrays (see image) without silanization for the wettability and switching of adhesive forces is presented. The microlens‐ arrayed surface (lock) shows a low contact angle and a high adhesive force following the Wenzel state, whilst the imprinted microbowl‐ arrayed surfaces (key), which were replicas of the microlenses, exhibit a high contact angle and an anti‐ adhesive behavior following the Cassie– Baxter state.
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